board/freescale/mx51evk/mx51evk.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2009 Freescale Semiconductor, Inc.
   4  */
   5
   6 #include <common.h>
   7 #include <init.h>
   8 #include <asm/global_data.h>
   9 #include <asm/io.h>
  10 #include <asm/gpio.h>
  11 #include <asm/arch/imx-regs.h>
  12 #include <asm/arch/iomux-mx51.h>
  13 #include <linux/delay.h>
  14 #include <linux/errno.h>
  15 #include <asm/arch/sys_proto.h>
  16 #include <asm/arch/crm_regs.h>
  17 #include <asm/arch/clock.h>
  18 #include <asm/mach-imx/mx5_video.h>
  19 #include <i2c.h>
  20 #include <input.h>
  21 #include <mmc.h>
  22 #include <fsl_esdhc_imx.h>
  23 #include <power/pmic.h>
  24 #include <fsl_pmic.h>
  25 #include <mc13892.h>
  26 #include <usb/ehci-ci.h>
  27
  28 DECLARE_GLOBAL_DATA_PTR;
  29
  30 int dram_init(void)
  31 {
  32         /* dram_init must store complete ramsize in gd->ram_size */
  33         gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
  34                                 PHYS_SDRAM_1_SIZE);
  35         return 0;
  36 }
  37
  38 #ifdef CONFIG_REVISION_TAG
  39 u32 get_board_rev(void)
  40 {
  41         u32 rev = get_cpu_rev();
  42         if (!gpio_get_value(IMX_GPIO_NR(1, 22)))
  43                 rev |= BOARD_REV_2_0 << BOARD_VER_OFFSET;
  44         return rev;
  45 }
  46 #endif
  47
  48 #define UART_PAD_CTRL   (PAD_CTL_HYS | PAD_CTL_PUS_100K_DOWN | PAD_CTL_DSE_HIGH)
  49
  50 static void setup_iomux_uart(void)
  51 {
  52         static const iomux_v3_cfg_t uart_pads[] = {
  53                 MX51_PAD_UART1_RXD__UART1_RXD,
  54                 MX51_PAD_UART1_TXD__UART1_TXD,
  55                 NEW_PAD_CTRL(MX51_PAD_UART1_RTS__UART1_RTS, UART_PAD_CTRL),
  56                 NEW_PAD_CTRL(MX51_PAD_UART1_CTS__UART1_CTS, UART_PAD_CTRL),
  57         };
  58
  59         imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
  60 }
  61
  62 #ifdef CONFIG_MXC_SPI
  63 static void setup_iomux_spi(void)
  64 {
  65         static const iomux_v3_cfg_t spi_pads[] = {
  66                 NEW_PAD_CTRL(MX51_PAD_CSPI1_MOSI__ECSPI1_MOSI, PAD_CTL_HYS |
  67                                 PAD_CTL_DSE_HIGH | PAD_CTL_SRE_FAST),
  68                 NEW_PAD_CTRL(MX51_PAD_CSPI1_MISO__ECSPI1_MISO, PAD_CTL_HYS |
  69                                 PAD_CTL_DSE_HIGH | PAD_CTL_SRE_FAST),
  70                 NEW_PAD_CTRL(MX51_PAD_CSPI1_SS1__ECSPI1_SS1,
  71                                 MX51_GPIO_PAD_CTRL),
  72                 MX51_PAD_CSPI1_SS0__ECSPI1_SS0,
  73                 NEW_PAD_CTRL(MX51_PAD_CSPI1_RDY__ECSPI1_RDY, MX51_PAD_CTRL_2),
  74                 NEW_PAD_CTRL(MX51_PAD_CSPI1_SCLK__ECSPI1_SCLK, PAD_CTL_HYS |
  75                                 PAD_CTL_DSE_HIGH | PAD_CTL_SRE_FAST),
  76         };
  77
  78         imx_iomux_v3_setup_multiple_pads(spi_pads, ARRAY_SIZE(spi_pads));
  79 }
  80 #endif
  81
  82 static void power_init(void)
  83 {
  84         unsigned int val;
  85         struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)MXC_CCM_BASE;
  86         struct pmic *p;
  87         int ret;
  88
  89         ret = pmic_init(CONFIG_FSL_PMIC_BUS);
  90         if (ret)
  91                 return;
  92
  93         p = pmic_get("FSL_PMIC");
  94         if (!p)
  95                 return;
  96
  97         /* Write needed to Power Gate 2 register */
  98         pmic_reg_read(p, REG_POWER_MISC, &val);
  99         val &= ~PWGT2SPIEN;
 100         pmic_reg_write(p, REG_POWER_MISC, val);
 101
 102         /* Externally powered */
 103         pmic_reg_read(p, REG_CHARGE, &val);
 104         val |= ICHRG0 | ICHRG1 | ICHRG2 | ICHRG3 | CHGAUTOB;
 105         pmic_reg_write(p, REG_CHARGE, val);
 106
 107         /* power up the system first */
 108         pmic_reg_write(p, REG_POWER_MISC, PWUP);
 109
 110         /* Set core voltage to 1.1V */
 111         pmic_reg_read(p, REG_SW_0, &val);
 112         val = (val & ~SWx_VOLT_MASK) | SWx_1_100V;
 113         pmic_reg_write(p, REG_SW_0, val);
 114
 115         /* Setup VCC (SW2) to 1.25 */
 116         pmic_reg_read(p, REG_SW_1, &val);
 117         val = (val & ~SWx_VOLT_MASK) | SWx_1_250V;
 118         pmic_reg_write(p, REG_SW_1, val);
 119
 120         /* Setup 1V2_DIG1 (SW3) to 1.25 */
 121         pmic_reg_read(p, REG_SW_2, &val);
 122         val = (val & ~SWx_VOLT_MASK) | SWx_1_250V;
 123         pmic_reg_write(p, REG_SW_2, val);
 124         udelay(50);
 125
 126         /* Raise the core frequency to 800MHz */
 127         writel(0x0, &mxc_ccm->cacrr);
 128
 129         /* Set switchers in Auto in NORMAL mode & STANDBY mode */
 130         /* Setup the switcher mode for SW1 & SW2*/
 131         pmic_reg_read(p, REG_SW_4, &val);
 132         val = (val & ~((SWMODE_MASK << SWMODE1_SHIFT) |
 133                 (SWMODE_MASK << SWMODE2_SHIFT)));
 134         val |= (SWMODE_AUTO_AUTO << SWMODE1_SHIFT) |
 135                 (SWMODE_AUTO_AUTO << SWMODE2_SHIFT);
 136         pmic_reg_write(p, REG_SW_4, val);
 137
 138         /* Setup the switcher mode for SW3 & SW4 */
 139         pmic_reg_read(p, REG_SW_5, &val);
 140         val = (val & ~((SWMODE_MASK << SWMODE3_SHIFT) |
 141                 (SWMODE_MASK << SWMODE4_SHIFT)));
 142         val |= (SWMODE_AUTO_AUTO << SWMODE3_SHIFT) |
 143                 (SWMODE_AUTO_AUTO << SWMODE4_SHIFT);
 144         pmic_reg_write(p, REG_SW_5, val);
 145
 146         /* Set VDIG to 1.65V, VGEN3 to 1.8V, VCAM to 2.6V */
 147         pmic_reg_read(p, REG_SETTING_0, &val);
 148         val &= ~(VCAM_MASK | VGEN3_MASK | VDIG_MASK);
 149         val |= VDIG_1_65 | VGEN3_1_8 | VCAM_2_6;
 150         pmic_reg_write(p, REG_SETTING_0, val);
 151
 152         /* Set VVIDEO to 2.775V, VAUDIO to 3V, VSD to 3.15V */
 153         pmic_reg_read(p, REG_SETTING_1, &val);
 154         val &= ~(VVIDEO_MASK | VSD_MASK | VAUDIO_MASK);
 155         val |= VSD_3_15 | VAUDIO_3_0 | VVIDEO_2_775;
 156         pmic_reg_write(p, REG_SETTING_1, val);
 157
 158         /* Configure VGEN3 and VCAM regulators to use external PNP */
 159         val = VGEN3CONFIG | VCAMCONFIG;
 160         pmic_reg_write(p, REG_MODE_1, val);
 161         udelay(200);
 162
 163         /* Enable VGEN3, VCAM, VAUDIO, VVIDEO, VSD regulators */
 164         val = VGEN3EN | VGEN3CONFIG | VCAMEN | VCAMCONFIG |
 165                 VVIDEOEN | VAUDIOEN  | VSDEN;
 166         pmic_reg_write(p, REG_MODE_1, val);
 167
 168         imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_EIM_A20__GPIO2_14,
 169                                                 NO_PAD_CTRL));
 170         gpio_request(IMX_GPIO_NR(2, 14), "gpio2_14");
 171         gpio_direction_output(IMX_GPIO_NR(2, 14), 0);
 172
 173         udelay(500);
 174
 175         gpio_set_value(IMX_GPIO_NR(2, 14), 1);
 176 }
 177
 178 int board_early_init_f(void)
 179 {
 180         setup_iomux_uart();
 181         setup_iomux_lcd();
 182
 183         return 0;
 184 }
 185
 186 int board_init(void)
 187 {
 188         /* address of boot parameters */
 189         gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
 190
 191         return 0;
 192 }
 193
 194 #ifdef CONFIG_BOARD_LATE_INIT
 195 int board_late_init(void)
 196 {
 197 #ifdef CONFIG_MXC_SPI
 198         setup_iomux_spi();
 199         power_init();
 200 #endif
 201
 202         return 0;
 203 }
 204 #endif
 205
 206 /*
 207  * Do not overwrite the console
 208  * Use always serial for U-Boot console
 209  */
 210 int overwrite_console(void)
 211 {
 212         return 1;
 213 }
 214
 215 int checkboard(void)
 216 {
 217         puts("Board: MX51EVK\n");
 218
 219         return 0;
 220 }